Main Script Execution Failed, what does this mean?

I am trying to install the symlinks for danimator's customize but every time i try to install the symlinks it says Main Script Execution Failed. What does this mean and how can i fix it? Please reply. THANKS.

In a few simple words, it means you don't have enough room on your ipod to install that application! It happened to me once! But don't worry, all is not lost! Here is how to make room on your iPod.

SSH into your iPod and delete a few apps you don't really need for now. (I would recommend that you back them up onto your computer, so that when the whole process is complete, you can stick them back on!) Then install BossTool and move all of your app and ringtones and fonts by pressing the buttons, and then you can install what ever you like!! When that's done, then you can SSH back into your iPod, and put the apps you backed up back into the application directory!!!